[samcohen]

We are going to be adding a feature to the donation heart that will allow a user to offer their gpu when they are not using it to a collective pool that will hash for cryptocurrency. If you have never donated to calibre or simply can't afford it, this is an easy way to donate a few cents a month and with larger numbers it will make a big difference. This will be fully opt-in so if you have a weak computer there is nothing to worry about. This module has throttle control and runs on low priority, so your computer is not affected when you launch another application that requires usage from your GPU. Would love to hear the community's thoughts on how we can make this successfully.